need help ford has no idea and says replace the engine

[jbb2001]

i have a 01 just com. test and all came back with 390 to 395 truck has 290,000 on it , runs like crap untill you hit the gas and comes to life and runs like its new , we did a buzz test and 3 came back that we had to open the hood to hear starts very hard and if it sits for 3 or more days it starts good , lots of smoke more like fuel smoke and some blue , this week we put new o rings and glow plugs in it and new harness under the valve covers , once we get it started it runs good till operating temp then misses and dies in gear , unless you have your foot init then it fine, now the bad i use 1 gal yes i said 1 gal in 40 miles of oil no leaks at all no oil in the tailpipes . can anyone give me any ideas thanks jon

[00strker]

u would have to be seein that much oil somewhere

[jbb2001]

we dont its as clean as new under there it blows blue smoke but not bad , ford took it on a 30 mile ride and it used almost that much close to a gal. at work we had a cat diesel with bad injectors use alot more could this be it , i would hate to spend $230 each for new injectors and that not be it.

[Dirk]

Missing? Were the injectors tested via contribution/balance? Is it leaking the oil?

After it sits for 3 days, check the oil in the HPOP reservoir. Should be 1/2 inch or so from the top. Monitor the data stream. Watch the ICP and IPR.

[jbb2001]

i can give my cell if anyone could help me with it please

[jbb2001]

i just got a new icp and new ipr for it and it will be in it tonight my icp was full of oil at the plug so i took it as junk i will do the contribution test tonight , as for the oil the truck has no leaks anywere at all . thanks for the reply

[jbb2001]

sorry said the wrong thing i got a new thats behind the altanator on the head. and the valve thats under the fuel filter asembly sorry for the misstake

[TurboSevenThree]

I'd like to suggest a compression test too. Just for poops and laughs. When I had a missing injector that's one of the things Dirk told me I should do. And the guy that had a hole in his piston was having weird problems too.

Just to try another thing.. I'd say do a compression test, I would. Good luck bud!

[00strker]

is there fuel in the oil? i guess u are buring so much its hard to tell... turbo 7.3 suggestion could be likely but i would think it woudl run real ****ty if so

[jbb2001]

compression test came back as 390 to 395 for all, the fuel was black like oil thats why we did the o rings first but after it still uses oil , thanks for all the info tonight